ANYONE with $25 million to spare should swoop down to West 12th Street. We reported a few weeks back that Luke and Julie Janklow were heading for divorce, and now Cityfile.com says their townhouse – with six bedrooms, five wood-burning fireplaces and a rooftop garden – is listed with Brown Harris Stevens. The duo – he a lit agent who works with his father, Mort Janklow, and she the owner of oft-empty Sweetiepie restaurant on Greenwich Avenue – bought the brownstone for $4.5 million in 2004 and renovated it to a fare-thee-well.